My bicycle is an old used Trek hybrid (1994?) that I got a few years back. When replacing the tires recently I discovered that my rear axle was significantly bent (not surprising for a freewheel bicycle), and upon removing the axle and bearings I discovered massive cracks all along the freewheel side of the rear hub. (see photos below)
I'm sure that the hub is toast - but where do I go from here? I could buy a hub and rebuild the wheel, but I am guessing that is a waste of money compared to a new wheel.
Where/how do I look for a replacement rear wheel? Rear dropout spacing seems to be about 138mm, rims are 700c and about 26mm wide. I have a 7-speed freewheel that seems fine, but I am wondering if it makes sense to just get a freehub and a new 7-speed cassette to avoid future bent axles. Currently have all Shimano drivetrain components, not sure what model.
I mostly do road riding and commuting, with occasional light gravel. Brakes are rim cantilever style.
Thanks so much for the help!
TL;DR: Rear hub cracked - new wheel? How much, where to look?